YBa2Cu3O7-metal界面的电荷再分布
Charge redistribution at YBa2Cu3O7-metal interfaces
摘要：
由于高温超导体的能带结构在局部尺度上发生了变化，界面电荷的重新分布对高温超导体的电子应用至关重要。采用第一性原理计算方法研究了YBa_2Cu_3O_7（YBCO）与金属接触时的正常态电子结构.我们推导出定量的结果，由于金属接触的超导CuO 2平面的本征掺杂。我们的研究结果可以解释在一个带弯曲的机制，辅之以本地屏蔽效应。我们确定了0.09至0.13电子的净电荷转移，有利于面内铜网站，这取决于界面取向。
英文摘要：
Charge redistribution at interfaces is crucial for electronic applications of high-Tc superconductors, since the band structure is modified on a local scale. We address the normal-state electronic structure of YBa2Cu3O7 (YBCO) at an YBCO-metal contact by first principles calculations for prototypical interface configurations. We derive quantitative results for the intrinsic doping of the superconducting CuO2 planes due to the metal contact. Our findings can be explained in terms of a band-bending mechanism, complemented by local screening effects. We determine a net charge transfer of 0.09 to 0.13 electrons in favour of the intraplane Cu sites, depending on the interface orientation.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
